Type 390V Vacuum tank sight glass | ACI Industriearmaturen GmbH

Circular Vacuum Sight Glass Fitting Type 390V - PN16

with welding ends according to DIN EN 1092-1 type 11

Sight Glass Fitting Type 390V

Our round vaccum tank sight glass fittings type 390V are welded on a vessel wall or pipeline to allow observation or illumination of the inside. Equipped with welding ends according to DIN EN 1092-1 type 11, the sight glass fittings type 390V are suitable for the most common pipelines. As with our other sightglasses, a sightglass made of chemically highly resistant borosilicate glass to DIN 7080 or similar is clamped between two high-quality stainless steel flanges and proven quality gaskets.


Exploded_view_type_390V_with_labelling_of_the_individual_parts

Our type 390V sight glasses are made of the high-quality stainless steel 1.4571 (316Ti) that our customers have appreciated for years. The glass material used is borosilicate glass 3.3 according to DIN 7080 (or similar), which has proven itself in the industry.

The fitting is sealed with ring gaskets adapted to your requirements from an extensive range of materials, like PTFE, NBR, EPDM, FKM, Silicone and many other branded gaskets are available for special applications.

You can find more information about gasket materials in our Help Center

If the process conditions pose a problem even for the highly resistant borosilicate glass, an FEP or mica protection screen specially adapted to the fitting offers additional protection against steam and aggressive chemicals, such as alkalis up to a pH value of 14. 

As with other of our sightglass fittings, our Type 390V can be optionally equipped with SGW type wipers or lights. 

More technical details about our sightglass fitting type 390V can be found further down this page!

Technical data

Flange material:

  • Base flange:
    1.4571 (factory standard)
  • Cover flange:
    1.4571 (factory standard)
  • Other materials on request ¹

Version:

  • Vaccum design
  • with welding ends according to
    DIN EN 1092-1 type 11

Temperature:

  • up to 220 °C with borosilicate glass
    according or similar to DIN 7080

Sight glass:

  • Borosilicate glass DIN 7080 or similar

Nominal size:

  • DN 15 up to DN 350

Options:

  • Wiper SGW with PTFE or silicone wiper blade
  • LED lights for EX- and Non-EX-areas
  • PLEXIGLAS® - impact protection
  • Stainless-steel perforated plate - impact protection
  • FEP protective screen (for higher pH-values)
  • special desgins are possible
² depending on environmental variables

Gaskets:

  • PTFE, FKM, NBR, Silicone, EPDM
  • or according to customer requirements

Nominal pressure:

  • PN 16 

Screws:

  • A4-70 / A2-70

¹ Optional materials:

1.0460 / 1.4301 / 1.4307 (F304L) / 1.4404 (F316L) / 1.4410 (Super Duplex) / 1.4435 (F316L) / 1.4462 (F 51) / 1.4529 (Alloy 926) / 1.4539 (Alloy 904L) / 1.4541 (F321) / 1.4547 (F44) / 1.4550 (F347) / 1.4571 (316Ti) / 1.4828 / 1.4841 / 1.4876 ( Alloy 800H) / 1.4878 / 1.7335 / 2.4068 (Alloy 201) / 2.4360 (Alloy 400) / 2.4375 (Alloy K500) / 2.4602 (Alloy C-22) / 2.4605 (Alloy 59) / 2.4610 (Alloy C-4) / 2.4816 (Alloy 600) / 2.4819 (Alloy C-276) / 2.4856 (Alloy 625) / 2.4858 (Alloy 825) / 3.7035 (Titan)

Section_view_type_390V
DN Da [mm] Di [mm] A [mm] s [mm] Sealing ring design Weight [kg]
15 95 17 21,3 2 D-Ring DIN 11851 1,6
20 105 22 26,9 2,3 D-Ring DIN 11851 2,3
25 115 28 33,7 2,6 D-Ring DIN 11851 2,7
32 140 37 42,4 2,6 D-Ring DIN 11851 4,0
40 150 43 48,3 2,6 O-Ring-System* 4,4
50 165 54 60,3 2,9 O-Ring-System* 5,3
65 185 70 76,1 2,9 D-Ring DIN 11851 6,5
80 200 83 88,9 3,2 D-Ring DIN 11851 8,4
100 220 107 114,3 3,6 D-Ring DIN 11851 9,8
125 250 132 139,7 4 D-Ring DIN 11851 13,3
150 285 160 168,3 4,5 O-Ring-System* 17,1
200 (max. 10 bar(g)) 340 207 219,1 6,3 O-Ring-System* 25,1
250 (max. 10 bar(g)) 405 260 273 6,3 O-Ring-System* 37,4
300 (max. 6 bar(g)) 460 310 323,9 7,1 O-Ring-System* 49,3
350 (max. 6 bar(g)) 520 340 355,6 8 O-Ring-System* 70
*O-ring system including O-ring seal and if necessary PTFE/graphite flat gasket
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Type 390V Vacuum tank sight glass
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